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dc.date2003
dc.date.accessioned2007-01-03T04:50:44Z
dc.date.accessioned2022-02-03T09:26:14Z
dc.date.available2007-01-03T04:50:44Z
dc.date.available2022-02-03T09:26:14Z
dc.identifierlibimagesFRM2012
dc.identifier.urihttp://hdl.handle.net/11124/7295
dc.descriptionThe following information applies to the digital image:
dc.description"A good flattened dome of pyrite coated with beige-colored flattened crystals of siderite sprinkled with small crystals of probable chalcopyrite that have been replaced by pyrite; 3.3 x 3.0 x 1.4 in."
dc.descriptionThe mineral specimen comes from the Eagle Mine, located near Gilman in the Gilman mining district, Eagle County, Colorado. Rich silver-lead carbonate ores were discovered in the Gilman area around 1879. By the early 1880s a number of the area's mines were producing silver and gold. District production of these metals declined by the 1890s and lead and zinc became the district's primary products by the early 1900s. In 1912 the New Jersey Zinc Company consolidated some of the mines on Battle Mountain into the Eagle Mine, which became Colorado's major zinc producer. The Mine also became known for its attractive mineral specimens. The Eagle was operated by New Jersey Zinc until 1983 when it was purchased by the Battle Mountain Corporation. The Mine was closed in 1984 and subsequently flooded. Because of mine seepage, groundwater contamination and pollution from tailings the area of the Eagle Mine and the town of Gilman was declared a Superfund site in 1986.
dc.description.abstractThe mineral specimen comes from the Eagle Mine, located near Gilman in the Gilman mining district, Eagle County, Colorado. Rich silver-lead carbonate ores were discovered in the Gilman area around 1879. By the early 1880s a number of the area's mines were producing silver and gold. District production of these metals declined by the 1890s and lead and zinc became the district's primary products by the early 1900s. In 1912 the New Jersey Zinc Company consolidated some of the mines on Battle Mountain into the Eagle Mine, which became Colorado's major zinc producer. The Mine also became known for its attractive mineral specimens. The Eagle was operated by New Jersey Zinc until 1983 when it was purchased by the Battle Mountain Corporation. The Mine was closed in 1984 and subsequently flooded. Because of mine seepage, groundwater contamination and pollution from tailings the area of the Eagle Mine and the town of Gilman was declared a Superfund site in 1986.
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.rightsDigital image copyright owned by Front Range Minerals, Golden, CO.
dc.subjectZinc mines and mining
dc.subjectMineral and rock specimens
dc.titlePyrite pseudomorph after chalcopyrite (?) on siderite, pyrite: Colorado, Eagle County, Gilman, Eagle Mine
dc.typeStillImage


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